When first switched to nightly and activity stream was introduced it had a dark theme, i.e. dark background and light color for text. When Quantum got released I switched to it and the dark theme was preserved, but my work PC was on Chrome before that and when switched to Quantum it got a light / white theme for activity stream. Now I had to remove my firefox directory (i.e. ~/.mozilla/firefox/ and run Quantum anew and it got the light theme as well. Is there a way to get back to the dark theme of activity stream? Is very annoying to be blinded each time I open a new tab. Thanks